./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound50.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound50.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bb5ad63279572b10ccf828ab50fb4850c30a9bc769c3e514e6f9dd22eeb86526 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 20:28:51,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:28:51,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:28:51,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:28:51,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:28:51,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:28:51,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:28:51,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:28:51,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:28:51,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:28:51,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:28:51,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:28:51,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:28:51,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:28:51,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:28:51,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:28:51,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:28:51,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:28:51,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:28:51,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:28:51,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:28:51,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:28:51,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:28:51,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:28:51,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:28:51,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:28:51,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:28:51,155 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:28:51,156 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:28:51,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:28:51,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:28:51,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:28:51,161 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:28:51,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:28:51,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:28:51,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:28:51,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:28:51,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:28:51,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:28:51,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:28:51,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:28:51,167 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 20:28:51,206 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:28:51,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:28:51,207 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:28:51,207 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:28:51,208 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:28:51,209 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:28:51,209 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:28:51,209 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:28:51,209 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:28:51,210 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 20:28:51,211 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:28:51,211 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:28:51,211 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 20:28:51,212 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 20:28:51,212 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:28:51,212 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 20:28:51,213 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 20:28:51,213 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 20:28:51,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:28:51,214 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 20:28:51,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 20:28:51,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 20:28:51,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:28:51,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:28:51,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:28:51,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:28:51,217 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 20:28:51,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:28:51,218 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:28:51,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:28:51,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:28:51,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:28:51,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:28:51,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:28:51,220 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 20:28:51,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:28:51,220 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:28:51,220 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 20:28:51,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 20:28:51,221 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:28:51,221 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:28:51,222 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb5ad63279572b10ccf828ab50fb4850c30a9bc769c3e514e6f9dd22eeb86526 [2022-11-16 20:28:51,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:28:51,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:28:51,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:28:51,520 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:28:51,521 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:28:51,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound50.i [2022-11-16 20:28:51,606 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/data/7df6fef4d/e641b2383fad4153b5eae22ade0c5f5a/FLAG92360625a [2022-11-16 20:28:52,083 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:28:52,088 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound50.i [2022-11-16 20:28:52,102 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/data/7df6fef4d/e641b2383fad4153b5eae22ade0c5f5a/FLAG92360625a [2022-11-16 20:28:52,463 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/data/7df6fef4d/e641b2383fad4153b5eae22ade0c5f5a [2022-11-16 20:28:52,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:28:52,470 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:28:52,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:28:52,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:28:52,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:28:52,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:28:52" (1/1) ... [2022-11-16 20:28:52,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28679329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:28:52, skipping insertion in model container [2022-11-16 20:28:52,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:28:52" (1/1) ... [2022-11-16 20:28:52,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:28:52,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:28:52,730 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound50.i[948,961] [2022-11-16 20:28:52,741 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:805) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:1827) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:234) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1451) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:729) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1401) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1085) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1474) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3268) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2365) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-16 20:28:52,746 INFO L158 Benchmark]: Toolchain (without parser) took 274.42ms. Allocated memory is still 102.8MB. Free memory was 62.3MB in the beginning and 81.0MB in the end (delta: -18.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 20:28:52,746 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 102.8MB. Free memory is still 79.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 20:28:52,747 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.45ms. Allocated memory is still 102.8MB. Free memory was 62.1MB in the beginning and 81.0MB in the end (delta: -18.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 20:28:52,749 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 102.8MB. Free memory is still 79.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 269.45ms. Allocated memory is still 102.8MB. Free memory was 62.1MB in the beginning and 81.0MB in the end (delta: -18.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:805) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound50.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bb5ad63279572b10ccf828ab50fb4850c30a9bc769c3e514e6f9dd22eeb86526 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 20:28:54,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:28:54,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:28:54,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:28:54,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:28:54,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:28:54,865 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:28:54,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:28:54,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:28:54,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:28:54,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:28:54,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:28:54,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:28:54,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:28:54,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:28:54,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:28:54,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:28:54,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:28:54,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:28:54,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:28:54,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:28:54,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:28:54,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:28:54,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:28:54,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:28:54,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:28:54,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:28:54,921 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:28:54,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:28:54,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:28:54,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:28:54,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:28:54,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:28:54,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:28:54,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:28:54,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:28:54,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:28:54,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:28:54,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:28:54,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:28:54,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:28:54,934 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-16 20:28:54,980 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:28:54,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:28:54,982 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:28:54,982 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:28:54,983 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:28:54,983 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:28:54,983 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:28:54,984 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:28:54,984 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:28:54,984 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:28:54,985 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:28:54,985 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:28:54,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:28:54,987 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 20:28:54,988 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 20:28:54,988 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:28:54,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:28:54,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:28:54,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:28:54,989 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 20:28:54,989 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 20:28:54,989 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 20:28:54,989 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 20:28:54,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:28:54,990 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:28:54,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:28:54,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:28:54,991 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 20:28:54,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:28:54,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:28:54,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:28:54,992 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:28:54,992 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:28:54,992 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-16 20:28:54,993 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 20:28:54,993 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:28:54,993 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:28:54,993 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 20:28:54,994 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb5ad63279572b10ccf828ab50fb4850c30a9bc769c3e514e6f9dd22eeb86526 [2022-11-16 20:28:55,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:28:55,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:28:55,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:28:55,377 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:28:55,378 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:28:55,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound50.i [2022-11-16 20:28:55,448 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/data/683923f02/b2308fdffb674fce819ec918c9d7f613/FLAG75bc8aff1 [2022-11-16 20:28:55,925 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:28:55,925 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound50.i [2022-11-16 20:28:55,932 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/data/683923f02/b2308fdffb674fce819ec918c9d7f613/FLAG75bc8aff1 [2022-11-16 20:28:56,291 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/data/683923f02/b2308fdffb674fce819ec918c9d7f613 [2022-11-16 20:28:56,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:28:56,295 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:28:56,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:28:56,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:28:56,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:28:56,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:28:56" (1/1) ... [2022-11-16 20:28:56,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a14df2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:28:56, skipping insertion in model container [2022-11-16 20:28:56,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:28:56" (1/1) ... [2022-11-16 20:28:56,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:28:56,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:28:56,476 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound50.i[948,961] [2022-11-16 20:28:56,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:28:56,518 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:28:56,554 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound50.i[948,961] [2022-11-16 20:28:56,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:28:56,632 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:28:56,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:28:56 WrapperNode [2022-11-16 20:28:56,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:28:56,634 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:28:56,634 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:28:56,634 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:28:56,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:28:56" (1/1) ... [2022-11-16 20:28:56,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:28:56" (1/1) ... [2022-11-16 20:28:56,696 INFO L138 Inliner]: procedures = 18, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 74 [2022-11-16 20:28:56,697 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:28:56,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:28:56,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:28:56,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:28:56,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:28:56" (1/1) ... [2022-11-16 20:28:56,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:28:56" (1/1) ... [2022-11-16 20:28:56,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:28:56" (1/1) ... [2022-11-16 20:28:56,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:28:56" (1/1) ... [2022-11-16 20:28:56,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:28:56" (1/1) ... [2022-11-16 20:28:56,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:28:56" (1/1) ... [2022-11-16 20:28:56,739 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:28:56" (1/1) ... [2022-11-16 20:28:56,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:28:56" (1/1) ... [2022-11-16 20:28:56,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:28:56,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:28:56,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:28:56,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:28:56,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:28:56" (1/1) ... [2022-11-16 20:28:56,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:28:56,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:28:56,784 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:28:56,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:28:56,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 20:28:56,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 20:28:56,848 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 20:28:56,848 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 20:28:56,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:28:56,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:28:56,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 20:28:56,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 20:28:56,938 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:28:56,940 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:28:59,901 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:28:59,908 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:28:59,908 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 20:28:59,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:28:59 BoogieIcfgContainer [2022-11-16 20:28:59,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:28:59,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:28:59,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:28:59,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:28:59,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:28:56" (1/3) ... [2022-11-16 20:28:59,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd3f50a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:28:59, skipping insertion in model container [2022-11-16 20:28:59,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:28:56" (2/3) ... [2022-11-16 20:28:59,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd3f50a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:28:59, skipping insertion in model container [2022-11-16 20:28:59,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:28:59" (3/3) ... [2022-11-16 20:28:59,929 INFO L112 eAbstractionObserver]: Analyzing ICFG knuth_valuebound50.i [2022-11-16 20:28:59,951 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:28:59,951 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 20:29:00,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:29:00,016 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5f81bc46, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:29:00,016 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 20:29:00,020 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 20:29:00,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 20:29:00,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:29:00,029 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:29:00,030 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:29:00,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:29:00,035 INFO L85 PathProgramCache]: Analyzing trace with hash 919095715, now seen corresponding path program 1 times [2022-11-16 20:29:00,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:29:00,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90975151] [2022-11-16 20:29:00,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:29:00,050 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:29:00,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:29:00,058 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:29:00,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 20:29:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:29:00,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 20:29:00,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:29:00,605 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 20:29:00,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:29:00,606 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:29:00,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90975151] [2022-11-16 20:29:00,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90975151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:29:00,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:29:00,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 20:29:00,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284459537] [2022-11-16 20:29:00,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:29:00,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 20:29:00,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:29:00,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 20:29:00,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 20:29:00,662 INFO L87 Difference]: Start difference. First operand has 31 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 20:29:00,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:29:00,694 INFO L93 Difference]: Finished difference Result 59 states and 92 transitions. [2022-11-16 20:29:00,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 20:29:00,697 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2022-11-16 20:29:00,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:29:00,707 INFO L225 Difference]: With dead ends: 59 [2022-11-16 20:29:00,707 INFO L226 Difference]: Without dead ends: 27 [2022-11-16 20:29:00,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 20:29:00,721 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:29:00,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:29:00,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-16 20:29:00,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-16 20:29:00,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 20:29:00,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2022-11-16 20:29:00,772 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 29 [2022-11-16 20:29:00,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:29:00,772 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2022-11-16 20:29:00,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 20:29:00,774 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2022-11-16 20:29:00,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 20:29:00,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:29:00,777 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:29:00,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 20:29:00,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:29:00,983 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:29:00,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:29:00,984 INFO L85 PathProgramCache]: Analyzing trace with hash -960358297, now seen corresponding path program 1 times [2022-11-16 20:29:00,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:29:00,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071738833] [2022-11-16 20:29:00,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:29:00,985 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:29:00,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:29:00,986 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:29:00,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 20:29:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:29:11,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 20:29:11,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:29:51,478 WARN L233 SmtUtils]: Spent 10.76s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:30:19,849 WARN L233 SmtUtils]: Spent 11.00s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:30:34,557 WARN L833 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1| (_ BitVec 32))) (and (bvule |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1| (_ bv50 32)) (not (= (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4|) (let ((.cse0 (bvadd (_ bv4294967294 32) |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1|))) (let ((.cse2 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| .cse0)) (.cse1 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1|)) (.cse3 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1|)))) (bvadd (bvmul (_ bv4 32) (bvmul (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| .cse0) |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1|)) (bvneg (bvmul |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1| (bvmul (_ bv4 32) .cse1))) (bvmul (bvmul .cse2 |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1| |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1|) (_ bv4 32)) (bvneg (bvmul |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1| (bvadd (bvmul (_ bv8 32) .cse3) (bvmul .cse2 (_ bv8 32))))) (bvmul (_ bv8 32) .cse1) (bvmul (_ bv4 32) (bvmul .cse3 |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1| |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1|))))))) (bvule |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| (_ bv50 32)))) is different from false [2022-11-16 20:30:36,577 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1| (_ BitVec 32))) (and (bvule |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1| (_ bv50 32)) (not (= (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4|) (let ((.cse0 (bvadd (_ bv4294967294 32) |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1|))) (let ((.cse2 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| .cse0)) (.cse1 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1|)) (.cse3 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1|)))) (bvadd (bvmul (_ bv4 32) (bvmul (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| .cse0) |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1|)) (bvneg (bvmul |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1| (bvmul (_ bv4 32) .cse1))) (bvmul (bvmul .cse2 |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1| |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1|) (_ bv4 32)) (bvneg (bvmul |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1| (bvadd (bvmul (_ bv8 32) .cse3) (bvmul .cse2 (_ bv8 32))))) (bvmul (_ bv8 32) .cse1) (bvmul (_ bv4 32) (bvmul .cse3 |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1| |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1|))))))) (bvule |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| (_ bv50 32)))) is different from true [2022-11-16 20:30:36,578 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 20:30:36,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:30:53,965 WARN L855 $PredicateComparison]: unable to prove that (= (let ((.cse2 (bvadd |c_ULTIMATE.start_main_~a~0#1| (_ bv4294967294 32)))) (let ((.cse1 (bvneg (bvudiv |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|))) (.cse3 (bvurem |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|)) (.cse0 (bvudiv |c_ULTIMATE.start_main_~n~0#1| .cse2))) (bvadd (bvneg (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvadd (bvmul (_ bv8 32) .cse0) (bvmul (_ bv8 32) .cse1)))) (bvmul (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvurem |c_ULTIMATE.start_main_~n~0#1| .cse2)) (_ bv4 32)) (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1| .cse1)) (bvmul (_ bv8 32) .cse3) (bvneg (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvmul (_ bv4 32) .cse3))) (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1| .cse0))))) (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~n~0#1|)) is different from true [2022-11-16 20:31:03,669 WARN L855 $PredicateComparison]: unable to prove that (or (= (let ((.cse2 (bvadd |c_ULTIMATE.start_main_~a~0#1| (_ bv4294967294 32)))) (let ((.cse1 (bvneg (bvudiv |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|))) (.cse3 (bvurem |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|)) (.cse0 (bvudiv |c_ULTIMATE.start_main_~n~0#1| .cse2))) (bvadd (bvneg (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvadd (bvmul (_ bv8 32) .cse0) (bvmul (_ bv8 32) .cse1)))) (bvmul (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvurem |c_ULTIMATE.start_main_~n~0#1| .cse2)) (_ bv4 32)) (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1| .cse1)) (bvmul (_ bv8 32) .cse3) (bvneg (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvmul (_ bv4 32) .cse3))) (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1| .cse0))))) (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~n~0#1|)) (not (bvugt |c_ULTIMATE.start_main_~a~0#1| (_ bv2 32)))) is different from true [2022-11-16 20:31:14,616 WARN L855 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ BitVec 32))) (or (= (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5|) (let ((.cse1 (bvadd |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ bv4294967294 32)))) (let ((.cse2 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|))) (.cse0 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|)) (.cse3 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| .cse1))) (bvadd (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (bvmul (_ bv4 32) .cse0))) (bvmul (bvmul (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| .cse1) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) (_ bv4 32)) (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| .cse2)) (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (bvadd (bvmul .cse3 (_ bv8 32)) (bvmul (_ bv8 32) .cse2)))) (bvmul (_ bv8 32) .cse0) (bvmul (_ bv4 32) (bvmul .cse3 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|)))))) (bvugt |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ bv2 32)))) (not (= |c_assume_abort_if_not_#in~cond| (_ bv0 32)))) is different from true [2022-11-16 20:31:33,942 WARN L855 $PredicateComparison]: unable to prove that (or (= (_ bv0 32) c_assume_abort_if_not_~cond) (forall ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ BitVec 32))) (or (= (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5|) (let ((.cse1 (bvadd |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ bv4294967294 32)))) (let ((.cse2 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|))) (.cse0 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|)) (.cse3 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| .cse1))) (bvadd (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (bvmul (_ bv4 32) .cse0))) (bvmul (bvmul (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| .cse1) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) (_ bv4 32)) (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| .cse2)) (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (bvadd (bvmul .cse3 (_ bv8 32)) (bvmul (_ bv8 32) .cse2)))) (bvmul (_ bv8 32) .cse0) (bvmul (_ bv4 32) (bvmul .cse3 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|)))))) (bvugt |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ bv2 32)))) (not (= |c_assume_abort_if_not_#in~cond| (_ bv0 32)))) is different from true [2022-11-16 20:31:56,906 WARN L855 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~a~0#1| (_ BitVec 32))) (or (not (bvule |ULTIMATE.start_main_~a~0#1| (_ bv50 32))) (not (bvugt |ULTIMATE.start_main_~a~0#1| (_ bv2 32))) (= (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~n~0#1|) (let ((.cse3 (bvadd |ULTIMATE.start_main_~a~0#1| (_ bv4294967294 32)))) (let ((.cse1 (bvudiv |c_ULTIMATE.start_main_~n~0#1| .cse3)) (.cse0 (bvurem |c_ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|)) (.cse2 (bvneg (bvudiv |c_ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|)))) (bvadd (bvneg (bvmul |ULTIMATE.start_main_~a~0#1| (bvmul (_ bv4 32) .cse0))) (bvmul (_ bv4 32) (bvmul |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~a~0#1| .cse1)) (bvneg (bvmul |ULTIMATE.start_main_~a~0#1| (bvadd (bvmul (_ bv8 32) .cse1) (bvmul .cse2 (_ bv8 32))))) (bvmul (_ bv8 32) .cse0) (bvmul (_ bv4 32) (bvmul .cse2 |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~a~0#1|)) (bvmul (_ bv4 32) (bvmul |ULTIMATE.start_main_~a~0#1| (bvurem |c_ULTIMATE.start_main_~n~0#1| .cse3))))))))) is different from true [2022-11-16 20:31:56,908 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:31:56,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071738833] [2022-11-16 20:31:56,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071738833] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:31:56,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [417292578] [2022-11-16 20:31:56,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:31:56,910 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:31:56,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:31:56,913 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:31:56,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-16 20:32:31,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:32:31,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 20:32:31,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:33:26,373 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 20:33:26,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:33:47,673 WARN L855 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ BitVec 32))) (or (= (let ((.cse0 (bvadd |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ bv4294967294 32)))) (let ((.cse1 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|)) (.cse2 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| .cse0)) (.cse3 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|)))) (bvadd (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| .cse0))) (bvmul (_ bv8 32) .cse1) (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| .cse2)) (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (bvmul (_ bv4 32) .cse1))) (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| .cse3)) (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (bvadd (bvmul .cse2 (_ bv8 32)) (bvmul (_ bv8 32) .cse3))))))) (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11|)) (bvugt |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ bv2 32)))) (not (= |c_assume_abort_if_not_#in~cond| (_ bv0 32)))) is different from true [2022-11-16 20:34:07,042 WARN L855 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ BitVec 32))) (or (= (let ((.cse0 (bvadd |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ bv4294967294 32)))) (let ((.cse1 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|)) (.cse2 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| .cse0)) (.cse3 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|)))) (bvadd (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| .cse0))) (bvmul (_ bv8 32) .cse1) (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| .cse2)) (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (bvmul (_ bv4 32) .cse1))) (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| .cse3)) (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (bvadd (bvmul .cse2 (_ bv8 32)) (bvmul (_ bv8 32) .cse3))))))) (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11|)) (bvugt |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ bv2 32)))) (= (_ bv0 32) c_assume_abort_if_not_~cond) (not (= |c_assume_abort_if_not_#in~cond| (_ bv0 32)))) is different from true [2022-11-16 20:34:27,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [417292578] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:34:27,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514434228] [2022-11-16 20:34:27,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:34:27,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:34:27,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:34:27,946 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:34:27,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 20:34:56,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:34:56,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 20:34:56,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:35:51,877 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 20:35:51,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:35:51,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514434228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:35:51,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 20:35:51,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10, 10] total 10 [2022-11-16 20:35:51,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854566818] [2022-11-16 20:35:51,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:35:51,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 20:35:51,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:35:51,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 20:35:51,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=132, Unknown=13, NotChecked=232, Total=420 [2022-11-16 20:35:51,881 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-16 20:35:56,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.67s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 20:36:02,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 20:36:05,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 20:36:07,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 20:36:09,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:36:09,417 INFO L93 Difference]: Finished difference Result 42 states and 58 transitions. [2022-11-16 20:36:09,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 20:36:09,441 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29 [2022-11-16 20:36:09,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:36:09,443 INFO L225 Difference]: With dead ends: 42 [2022-11-16 20:36:09,443 INFO L226 Difference]: Without dead ends: 40 [2022-11-16 20:36:09,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 97 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 68.1s TimeCoverageRelationStatistics Valid=47, Invalid=154, Unknown=13, NotChecked=248, Total=462 [2022-11-16 20:36:09,445 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 22 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:36:09,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 98 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 113 Invalid, 2 Unknown, 80 Unchecked, 17.2s Time] [2022-11-16 20:36:09,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-16 20:36:09,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 31. [2022-11-16 20:36:09,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 9 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 20:36:09,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2022-11-16 20:36:09,459 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 29 [2022-11-16 20:36:09,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:36:09,460 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2022-11-16 20:36:09,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-16 20:36:09,460 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2022-11-16 20:36:09,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-16 20:36:09,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:36:09,461 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:36:09,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-11-16 20:36:09,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 20:36:10,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 20:36:10,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:36:10,063 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:36:10,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:36:10,064 INFO L85 PathProgramCache]: Analyzing trace with hash -603494572, now seen corresponding path program 1 times [2022-11-16 20:36:10,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:36:10,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245011947] [2022-11-16 20:36:10,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:36:10,064 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:36:10,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:36:10,066 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:36:10,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 20:36:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:36:10,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 20:36:10,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:36:10,803 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 20:36:10,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:36:10,803 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:36:10,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245011947] [2022-11-16 20:36:10,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1245011947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:36:10,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:36:10,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 20:36:10,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319799519] [2022-11-16 20:36:10,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:36:10,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 20:36:10,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:36:10,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 20:36:10,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:36:10,806 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 20:36:11,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:36:11,911 INFO L93 Difference]: Finished difference Result 44 states and 59 transitions. [2022-11-16 20:36:11,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 20:36:11,920 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2022-11-16 20:36:11,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:36:11,921 INFO L225 Difference]: With dead ends: 44 [2022-11-16 20:36:11,921 INFO L226 Difference]: Without dead ends: 42 [2022-11-16 20:36:11,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 20:36:11,927 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 8 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:36:11,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 135 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 20:36:11,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-16 20:36:11,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2022-11-16 20:36:11,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 20:36:11,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2022-11-16 20:36:11,939 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 34 [2022-11-16 20:36:11,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:36:11,940 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2022-11-16 20:36:11,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 20:36:11,940 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2022-11-16 20:36:11,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-16 20:36:11,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:36:11,942 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:36:11,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 20:36:12,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:36:12,147 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:36:12,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:36:12,147 INFO L85 PathProgramCache]: Analyzing trace with hash -127108025, now seen corresponding path program 1 times [2022-11-16 20:36:12,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:36:12,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1170407260] [2022-11-16 20:36:12,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:36:12,148 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:36:12,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:36:12,149 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:36:12,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-16 20:36:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:36:31,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 20:36:31,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:36:59,405 WARN L233 SmtUtils]: Spent 5.82s on a formula simplification that was a NOOP. DAG size: 44 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:37:56,624 WARN L233 SmtUtils]: Spent 10.74s on a formula simplification that was a NOOP. DAG size: 55 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:38:31,205 WARN L233 SmtUtils]: Spent 11.23s on a formula simplification that was a NOOP. DAG size: 55 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:38:50,257 WARN L833 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_22| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_15| (_ BitVec 32))) (let ((.cse8 (bvadd (_ bv4294967294 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_15|))) (let ((.cse3 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_22| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_15|))) (.cse7 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_22| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_15|)) (.cse2 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_22| .cse8))) (let ((.cse0 (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_22|)) (.cse1 (bvmul (bvmul .cse2 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_15| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_15|) (_ bv4 32))) (.cse4 (bvmul (_ bv4 32) (bvmul (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_22| .cse8) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_15|))) (.cse5 (bvmul (_ bv8 32) .cse7)) (.cse6 (bvmul (_ bv4 32) (bvmul .cse3 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_15| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_15|)))) (and (bvule |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_15| (_ bv50 32)) (= .cse0 (bvadd .cse1 (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_15| (bvadd (bvmul (_ bv8 32) .cse2) (bvmul (_ bv8 32) .cse3)))) .cse4 .cse5 .cse6 (bvneg (bvmul (bvmul (_ bv4 32) .cse7) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_15|)))) (not (= (_ bv0 32) (bvadd (bvneg .cse0) .cse1 (bvneg (bvmul (bvadd (bvmul (_ bv4 32) .cse2) (bvmul (_ bv4 32) .cse3)) (bvmul (_ bv2 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_15|))) .cse4 .cse5 (bvneg (bvmul .cse7 (bvmul (_ bv4 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_15|))) .cse6))) (bvule |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_22| (_ bv50 32))))))) is different from false [2022-11-16 20:38:52,303 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_22| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_15| (_ BitVec 32))) (let ((.cse8 (bvadd (_ bv4294967294 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_15|))) (let ((.cse3 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_22| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_15|))) (.cse7 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_22| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_15|)) (.cse2 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_22| .cse8))) (let ((.cse0 (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_22|)) (.cse1 (bvmul (bvmul .cse2 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_15| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_15|) (_ bv4 32))) (.cse4 (bvmul (_ bv4 32) (bvmul (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_22| .cse8) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_15|))) (.cse5 (bvmul (_ bv8 32) .cse7)) (.cse6 (bvmul (_ bv4 32) (bvmul .cse3 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_15| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_15|)))) (and (bvule |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_15| (_ bv50 32)) (= .cse0 (bvadd .cse1 (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_15| (bvadd (bvmul (_ bv8 32) .cse2) (bvmul (_ bv8 32) .cse3)))) .cse4 .cse5 .cse6 (bvneg (bvmul (bvmul (_ bv4 32) .cse7) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_15|)))) (not (= (_ bv0 32) (bvadd (bvneg .cse0) .cse1 (bvneg (bvmul (bvadd (bvmul (_ bv4 32) .cse2) (bvmul (_ bv4 32) .cse3)) (bvmul (_ bv2 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_15|))) .cse4 .cse5 (bvneg (bvmul .cse7 (bvmul (_ bv4 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_15|))) .cse6))) (bvule |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_22| (_ bv50 32))))))) is different from true [2022-11-16 20:38:52,304 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 20:38:52,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:39:38,092 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-16 20:39:38,093 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:39:38,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1170407260] [2022-11-16 20:39:38,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1170407260] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:39:38,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [780105950] [2022-11-16 20:39:38,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:39:38,094 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:39:38,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:39:38,097 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:39:38,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2022-11-16 20:40:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:40:12,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 20:40:12,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:41:45,795 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 20:41:45,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:41:56,226 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-16 20:41:56,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [780105950] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:41:56,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071725281] [2022-11-16 20:41:56,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:41:56,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:41:56,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:41:56,232 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:41:56,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1c7ee4e-8472-4578-887c-8cb6f3b6d3aa/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 20:42:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:42:29,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 20:42:29,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:44:02,662 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-16 20:44:02,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:44:11,767 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-16 20:44:11,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071725281] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:44:11,768 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 20:44:11,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 13, 7, 13, 7] total 18 [2022-11-16 20:44:11,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390782200] [2022-11-16 20:44:11,769 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 20:44:11,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 20:44:11,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:44:11,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 20:44:11,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=218, Unknown=12, NotChecked=30, Total=306 [2022-11-16 20:44:11,771 INFO L87 Difference]: Start difference. First operand 36 states and 46 transitions. Second operand has 18 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 13 states have internal predecessors, (28), 7 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13)